<template>
  <div id="app">
    <table class="tb">
      <tr>
        <th>编号</th>
        <th>品牌名称</th>
        <th>创立时间</th>
        <th>操作</th>
      </tr>
      <!-- 循环渲染的元素tr -->
      <tr v-for="(item,index) in list" :key="item.id">
        <td>{{ item.id }}</td>
        <td>{{ item.name }}</td>
        <td>{{ item.time|formatData }}</td>
        <td>
          <button @click="del" :key="index">删除</button>
        </td>
      </tr>
      <tr>
        <td colspan="4" v-show="this.list.length===0">没有数据咯~</td>
      </tr>
    </table>
    品牌名称：<input type="text" value="" v-model="name"/>
    <button class="add" @click="add">添加</button>
  </div>
</template>

<script>
import moment from 'moment'
export default {
  data() {
    return {
      list: [
        {id: 1, name: "奔驰", time: "2020-08-01"},
        {id: 2, name: "宝马", time: "2020-08-02"},
        {id: 3, name: "奥迪", time: "2020-08-03"},
      ],
      name: '',
    };
  },
  methods: {
    del(index) {
      this.list.splice(index, 1)
    },
    add() {

      this.list.push({
        id: this.list.length+1,
        name: this.name,
        time: new Date()
      })
    }
  },
  filters:{
    formatData(val){
      return moment(val).format('YYYY-MM-DD')
    }
  }
};
</script>

<style>
#app {
  width: 600px;
  margin: 10px auto;
}

.tb {
  border-collapse: collapse;
  width: 100%;
}

.tb th {
  background-color: #0094ff;
  color: white;
}

.tb td,
.tb th {
  padding: 5px;
  border: 1px solid black;
  text-align: center;
}

.add {
  padding: 5px;
  border: 1px solid black;
  margin-bottom: 10px;
}

input {
  height: 25px;
  width: 200px;
  margin-top: 5px;
  margin-right: 10px;
}
</style>
